Bracelet-watch.



I. DITESHEIM.

BRACELET WATCH. APPLICATION man NIM/6,1913.

Patented June 8, 1915.

4M Rf my f ma E m w UNITED STATES PATENT OFFICE.

ISIIDOREA DITESHEIM, 0F CHAUXv-DE-FONDS, SWITZERLAND, ASSIGNOR TO THE FIRM 0F FABRIQUE MOVADO L. A. J. DITESHEIM & FBRE; l

K BRACELET-WATCH.

Specication of Letters Patent.

Patented June 8, 1915.

T0 all whom 4it may concern.'

Be it known that I, IslDoRn DITESHEIM, a citizen of the Swiss Republic, and resident of ChauX-de-Fonds, Switzerland, have invented a new and useful Bracelet-IVatch, of which the following is a full, clear, and exact specification.

Bracelet watches have been already made with an elongated case containing the watch movement and having an inner surface curved in the direction of the curve of the bracelet in order to adapt itself more or less perfectly to the form of the arm. But

in bracelet watches of this kind as hitherto constructed, the watch movement or motion work retained the usual round form of watch mechanisms, that is to say, it was mounted upon a large circular pillar plate, so that the movement or motion work could only occupy a greatly reduced portion of the free space of the case.

In the object of augmenting .the curvature of the case of a' bracelet watch of this kind, so that it may conform exactly to the shape of the human arm, and of enabling at the same time to obtain a better use of the free space contained in the case that is to say, of enabling the maker t0 place in a case of predetermined dimensions a larger watch movement or motion work and consequently a motion work or movement of better going capacity or of being able to place a movement or motion work of predetermined dimensions in a smaller case, the applicant has had'the idea of mounting the movement or motion work upon a pillar plate bent angularly according to the form of several faces of a prism and extending throughout all the available space in the interior of the elongated case. For instance, the pillar plate may possess two elbows and have a middle part bearing the axles of all the wheels of the movement or motion work except that of the balance wheel and two end parts sloping with regard to this middle part and of which the one bears the greaterv part of the organs serving for winding up the barrel spring and for hand-setting, while the other part supports the axle of the balance wheel and its accessories, the fork of the escapement being bent angularly in order to compensate the difference in level between the escapement wheel and the corresplpntlling organs of the axle of the balance w ce The invention is illustrated by way of example in the accompanying drawing as follows.

Figures l and 2 show in side elevation and in plan view a bracelet watch of this kind attached to an arm (supposed to be sectioned in Fig. l).

watch, and Fig. 4 shows a longitudinal section of the case containing the said movement or motion work.

As may be seen in these figures the bracelet watch comprises an elongated ease A provided at its two opposed ends with links or handles 9 connected to flexible bands l0 which are secured together by a buckle l1 and a strap or strip 12. The lower face of this case A, that is to say the face, which is opposite to the dial a is curved in conformity with the shape of the arm, while the said dial is protected as well as the hands b, c

, moving in front of it, by means of an elongated glass d.

The pillar plate B ofthe motion work or movement is formed of a flat plate, angularly bent according to two obtuse angles. Its middle portion 'e placed between the two end portions z', y', which are at an angle with regard to the middle one, supports between it and'a pentagonal parallel plate J, the axle of the central wheel D, the pinion of which f engages with the wheel E of the going barrel C, also placed between B and J. The axle g of the going barrel C bears beneath the pillar plate, the winding wheel G engaging with an intermediate wheel II maintained under the end part z' of the pillar plate B parallel to the said part i, by awasher held by two screws and engaging normally with the winding pinion I placed upon the winding stem L. The planes of the tooth wheels G and I-I intersect one another at an obtuse angle. Under the middle part e of the pillar plate B there is articulated the click is of the winding mechanism, on which there acts a spring l also placed beneath the middle part e of B.

Above the plate J, the axle of the central wheel D bears a pinion m connected by the intermediate wheels n, o, supported upon J parallel to the part e of B, with a wheel K in one piece with a pinion 7) and held together with this latter parallel to the end part i of the plate upon a support M adapted to the said part z', perpendicularly to this Fig. 3 shows a plan V view of the movement or motion work ofthe vthe plate ll.

latter. rlhe Winding stem ll is guided on the one hand in this support M and on the other hand in a. part N adapted to the part z of lt terminates in a lrnob l5 placed in a recess C of the case A.. Upon a quadrangular partei' this stem l is placed a sliding double pinion of Breguet l)9 which can engage alternatively with the pinion of the winding stem l or with the pinion p according as the stem l is in the position corresponding to the Winding up ot the barrel spring or in that corresponding to the hand setting. Normally, the pinion P engages With the pinion of the stem l as is shown in the drawing. lf it is desired to bring it into the position which corresponds to the hand setting, it is suicient to draw the Winding stem in the direction ot the arrow fr so as to act by its annular groove g upon the piece r which is articulated upon the part i of B and is under the influence oit a spring s also adapted to z' and acts by means of an arm upon a rocking lever u pivoted upon the part z' of B, subjected to the action ot a spring wadjusted to the same part e' and penetrating into the groove c ot the sliding pinion lg. The hand setting having been eilected, the pinion l? can be brought back into the position corresponding to the Winding b v pushing the stem l in the opposite direction to the arrow ai.

lt will be seen from the preceding that the greater part oli the organs which serve for the Winding up of the barrel spring and the hand setting are supported by the end part 'l ol the plate l The central wheel lil transmits when the Watch is going, its motion by means o'lE the pinion and or the vvheel l, 2, ot the Wheel and the pinion 3, land ot the pinion 5 ot thev escapcment 'Wheel to the escapement Wheel 6, the axles of these three sets of Wheels and pinions being held between the middle portion e ot thc pillar plate B and a second small plate ll of generally triangular form 'with a lateral recess l, adapted to the plate B and parallel to this latter. rlhe anchor V operating with the escapement wheel 6 is held between the middle part e of the pillar plate B and a small curved bridge l screwed to the plate B and prolonged by an elbow forli 8 co operating with organs of the axle of the balance Wheel 14, held between the sloping end part ot the plate ll and a cock e/ screwed to the said part j and parallel to it, th(` said balance Wheel being combined as usual with its ordinary accessories (hair spring etc). llt Will be seen by the preceding that the' axle of the balance Wheel is mounted upon the part y' ot the pillar plate B and makes an acute angle With the ailles out the other moving parts of the movement or motion Work supported by the middle portion e el the said plate. lt Will be understood that with this arrangement almost the entire internal space of the case is utilized for containing the movement and that a case of given dimensions which could for instance contain an ordinary circular movement of 8 lines, would be able to contain a movement of the described caliber, of which the organs would possess the dimensions of the organs of the usual circular movement of l1 lines. Consequently, the Watch, of which' the case is provided With such a movement will go much more precisely and will support much longer use.` ll`he bracelet Watch described can be constructed only with an hour hand and with an hour hand and with a minute hand as it is shown in Fig. fl.

llVhat l claim( is:

l. ln a bracelet-watch having a case ol elongated shape with a. loiver surface curved to correspond with the curvature of a human arm. a pillar plate of elongated shape? bent angularly according to the form of several adjacent plane faces ot an obtuse angled prism and extending across the vvhole of the available interior space of the said case, and a Watch movement mounted upon and distributed over all the faces of the said pillar plate across the Whole ot the said elongated case, in order that a better use ot the interior space of the case may be obtained for containing the movement., substantially as described.

2. ln a. bracelet-Watch having a case ci elongated shape with a lovver surface curved to correspond Wit the curvature oi" a human arm, a pillar plate twice bent angularly according to the :Form of three adjacent plane :faces otn an obtuse angled prism and extending across the Whole oi the available interior space ot the said case, Watch movement mounted upon and distributed over all three faces of the said pillar plate9 acrossthe vvhole of the said elongated case and having its balance Wheel supported on one end. 'part oi' the said pillar plate, its Winding stem on the other end portion of the said pillar plate and its escapement Wheel on the middle portion of the said pillar plate, and an escapement 'fork bent angularly in order to compensate the angular ditr'erence of the planes ot the escapement Wheel and of the balance Wheel, substantially as described. y l

ln 1Witness vvhereotl l have hereunto signed my name this 22nd day of April llS, in the presence ci? two subscribing Witnesses.

llSlll'llE lTESllElll/l., lWitnesses @nannies librarian? Lome 

